EP1508554A3 - ZrO2-Al2O3 composite ceramic material - Google Patents

ZrO2-Al2O3 composite ceramic material Download PDF

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Publication number
EP1508554A3
EP1508554A3 EP04019509A EP04019509A EP1508554A3 EP 1508554 A3 EP1508554 A3 EP 1508554A3 EP 04019509 A EP04019509 A EP 04019509A EP 04019509 A EP04019509 A EP 04019509A EP 1508554 A3 EP1508554 A3 EP 1508554A3
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EP
European Patent Office
Prior art keywords
ceramic material
composite ceramic
zro
zro2
grains
Prior art date
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Withdrawn
Application number
EP04019509A
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German (de)
French (fr)
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EP1508554A2 (en
Inventor
Masahiro Nawa
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PHC Holdings Corp
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Matsushita Electric Works Ltd
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Publication of EP1508554A2 publication Critical patent/EP1508554A2/en
Publication of EP1508554A3 publication Critical patent/EP1508554A3/en
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    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/48—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on zirconium or hafnium oxides, zirconates, zircon or hafnates
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    • C04B35/48—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on zirconium or hafnium oxides, zirconates, zircon or hafnates
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    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
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    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
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    • C04B2235/78—Grain sizes and shapes, product microstructures, e.g. acicular grains, equiaxed grains, platelet-structures
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  • Chemical & Material Sciences (AREA)
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  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Oxide Ceramics (AREA)

Abstract

A ZrO2-Al2O3 composite ceramic material is provided, which is excellent in mechanical strength and toughness, and has the capability of preventing low temperature degradation. This ceramic material includes a first phase of ZrO2 grains having an average grain size of 0.1 to 0.8 µm, and containing 10 to 12 mol% of CeO2 and 0.005 mol% to less than 0.5 mol% of Y2O3, and a second phase of Al2O3 grains having an average grain size of 0.1 to 0.5 µm. The ZrO2 grains is composed of 90 vol% or more of tetragonal ZrO2, and a content of the second phase in the composite ceramic material is in a range of 20 to 60 vol%, and preferably 30 to 50 vol%.
EP04019509A 2003-08-22 2004-08-17 ZrO2-Al2O3 composite ceramic material Withdrawn EP1508554A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2003299092 2003-08-22
JP2003299092 2003-08-22

Publications (2)

Publication Number Publication Date
EP1508554A2 EP1508554A2 (en) 2005-02-23
EP1508554A3 true EP1508554A3 (en) 2008-01-23

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ID=34056271

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EP04019509A Withdrawn EP1508554A3 (en) 2003-08-22 2004-08-17 ZrO2-Al2O3 composite ceramic material

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US (1) US7056851B2 (en)
EP (1) EP1508554A3 (en)
KR (1) KR100573758B1 (en)
CN (1) CN1268576C (en)
AU (1) AU2004203889B2 (en)

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DATABASE COMPENDEX [online] ENGINEERING INFORMATION, INC., NEW YORK, NY, US; 1985, SATO T ET AL: "CONTROL OF THE TETRAGONAL TO MONOCLINIC PHASE TRANSFORMATION OF YTTRIA-DOPED ZIRCONIA CONTAINING CeO2, CaO AND Al2O3 IN AIR AND WATER", XP002461404, Database accession no. EIX87030046709 *

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KR100573758B1 (en) 2006-04-24
US20050079971A1 (en) 2005-04-14
CN1607196A (en) 2005-04-20
KR20050020706A (en) 2005-03-04
AU2004203889B2 (en) 2006-02-23

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